Here are Ranvir’s stats at 3.70 compared to Wu Kong’s, courtesy of Ranvir – New June 2019 HOTM (Hero of the Month): First Thoughts & Discussion - #223 by Z3US
Ranvir 3.70
646, 
658, 
947
Wu Kong 4.70
707, 620, 992
You’re getting about the same durability, with less attack having Ranvir at 3.70 instead of a maxed Wu Kong. You do get a faster skill that deals damage though with a slightly bigger attack boost but slightly bigger accuracy drop.
For titans they seem to be about the same, for raids and map levels I’d argue maxed Wu is better.